Lysergic acid diethylamide (LSD, acid, tabs, blotter) can come as an odourless white powder, but is most commonly available in squares of blotting paper which are placed under the tongue. It can also be made into a liquid which can be injected or added to other substances and smoked.
As a psychedelic, LSD changes the way you perceive the world. You may sense and feel more and become aware of things normally filtered out by your mind -- visual, auditory, sensory and emotional.
Important information about LSD, including its effects, how to be safer and how to cut down